Oil-burner.



S. T. JOHNSON.

I OIL BURNER. 1 APPLICATION FILED JAN. 31, 1911,

1,009,525. Patented N0v.21, 1911.

3 SHEETSSHEET 1.

\k a 1 l/ 1 My F ame/nto'a A 43 Seward. TIJcahrLsurr-L S. T. JOHNSON.

OIL BURNER. APPLICATION FILED JAN. 31, 1911.

Patented Nov. 21

3 SHEETSSHEET 2.

I wve/nlio'z SQwardT J1: hhsun S. T. JOHNSON.

OIL BURNER.

APPLICATION FILED .TAN.31,1911.

1,009,525. Pa tented.Nov.21,1911.

3 SHEETS-SHEET 3.

jwuemtom Saward TJU hnsun SEWARD T. JOHNSON, OF OAKLAND, CALIFORNIA.

OIL-BURNER.

Specification of Letters Patent. :Patented Nov. 21, 1911.

Application filed January 31, 1911. Serial No. 605,730.

To all whom it may conceww:

Be it known that I, SEWARD T. JOHNSON, a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented certain new and useful Improvements in Oil-Burners, ofwhich the following is a specification.

This invention relates to oil burners, and the principal object of thesame is to provide an improved means for atomizing oil.

The invention further has for its object to provide means for shuttingoff the supply of oil if the atomizing fan stops running.

This invention is illustrated in the accompanying drawings.

Figure 1 is a top plan view of the device as it would appear when inuse. Fig. 2 is a sectional view along the line 22 of Fig. 1. Fig. 3 is aview of the means for shutting off the oil supply. Fig. 4 is a side viewof the mechanism shown in Fig. 3. Fig. 5 is a diagram of the electriccircuit. is a sectional view through the fan, Fig. 7 is a view in rearelevation of the device, part of the device being shown in section onthe line 77 in Fig. 3, and part of the casing.

being broken away. Fig. 8 is a fragmentary view of the outer face of thefan casing. Fig.v 9 is a fragmentary view showing the manner of securingthe wires of the fan. Fig. 10 is a. sectional view along the line 1o 10of Fig. 9.

In the accompanying drawings 1 indicates afire box in which a pan 2 isrigidly mounted and is provided with an apron 3 mounted in the frontwall of the fire box, and extending beyond the fire box a slight degree.The outer portion 4 of the pan isprovided with a vertical slot 5 whichforms a pair of spaced apart walls 6 and 7. The wall 6 is provided witha vertical slot 8, and the wall 7 is provided with an opening 9positioned in alinement with the slot 8.

A fan is used in connection with this invention and is provided with acasing 10, the mouth piece 11 of which is provided with an end flange 12which fits into the slot 5 formed between the walls 6 and 7, andcommunicating with the opening 9 formed in the wall 7. A fan is mountedwithin the casing 10, and comprises a hollow hub 13 which has itscentral opening divided into two compartments 14 and 15 by means of theweb 16 having a central opening 17. A number" of spokes 18' are securedto the hub Fig. 6.

' of wire are each bent to form a bridge 24 which fits beneath the lugs22 and 23. A

pair of arms 25 and 26 extend from each ofthe bridges 24 to the edge ofthe plate and are then bent across the space between the plates. Thearms are bent away from the blades 21 for a portion of their length andare then bent parallel with the blades 21 so that there is a clear spaceleft between the free ends of the wires and the blades 21.

The hub is provided with an enlarged portion 27 near one end andsurrounding the chamber 15. This enlarged portion and the outer portion28 of the chamber 15 are slottedto provide a groove for pivotallymountinga pair of levers 29. .The levers are each provided at one endwith a weight 30 and at the other end with an angled end 31 which passesthrough the slot of the end 28 and engages with a collar 32 mounted upona shaft 33. The collar 32 is of such dimension as to easily slidethrough the chamber 15, and the shaft 33 is of such dimension that itsinner end will fit into the opening 17 formed in the web 16.

A spring 34 is mounted upon the shaft 33 between the web 16 and thecollar 32 and normally holds the shaft and levers in position as shownin Fig. 6, with the outer end of the shaft extending a short distancebeyond the casing of the fan.

A plate 35 is secured to the fan casing 10 by means of screws 36 and isprovided with an inlet 37 which permits communication with the interiorof the casing. A pair of plates 38 are formed upon the plate 35 andlower end with a hook the beams 43 and 44, and a lug 46 is formed ateach end of the beam 44.

A valve 47 is provided with a pipe 48 whlch passes through the lug 46.at one end of the beam 44 and communicates with a shut-ofl valve 49which is positioned be tween the two cars 46. A stem 50 leads from theshut ofi 49'and passes through the cal-46 at the other end of the beam44. The

outer portion 51 of the stem 50 is bent parallel with the beam 43 and isthen bent away from the beam 43 to form the lever 52. The lever 52 ofthe stem 50 is supported by means of a bracket 53 which is bent down-.wardly from the beam. A weight 54 is adjustably mounted upon the lever52 of the stem 50 and holds the stem in the position shown in Fig. 4. Inthis position the shut olf 49 will be closed and the supply of oil willbe cut off. The oil passes through the needle valve 47 and through theshut off 49 into a vertical pipe 55. The pipe 55 extends upwardly to apoint abovethe inlet 37 and communicates with a horizontal pipe 56 whichpermits the oil to flowinto the in let 37. A pipe 57 leads from theinner end of the inlet 37 into the space between the wires 25 and 26,and the bladesof the fan, as clearly shown in Figs. 2 and 7.

An arm 58 is pivotally mounted between a pair of hinge ears 59 and isprovided at itsortion 60 which is positioned beneath a pa1r of abutments61. The upper end of the arm 58 is positioned in alinement with theshaft 33, and the hook portion is in position to engage the lever 52 ofthe stem 50 when the rod is turned. When the lever 52 of the stem 50 isturned, the stem 50 is turned about onethird of a rotation, and thisturn is suflicient to open the shut off 49 and permit oil to flow fromthe pipe 48 into the pipe 57.

The valve 47 is provided with the usual plate 62, which has theindicating numerals by means of which the amount of oil passing throughthe valve can be better regulated, as the lever 63 can be turned to adesired numeral and permit the valve to be opened a desired amount.

A plunger 64 is slidably mounted in the beam 44 and has one endprotruding into the housing 45. The outer end of the plunger is incontact with a cam 65 formed upon the stem 50. The inner end of theplunger is provided with an insulating head 66 which is in contact witha spring arm 67 of an electric contact and when the stem is in theposition shown in Figs. 3 and 4 the spring arm-of the contact will beheld away from the arm 68 so that the electric circuit will be broken.In Fig. 5 I have shown the electric circuit. It will readily be seenthat the wires 69 and 70 are connected with the contacts 67 and 68. Thewire 70 leads to one of the points of the motor, and the wire 69 leadsto a plug 71. A short wire 72 leads from the plug to the second point ofthe motor.

In the operation of this device, the lever 52 of the stem 50 is raisedand held in elevated position. This opens the shut off 49 and permitsthe oil to flow through the pipes into the pipe 57. It also permits thespring arm 67 to come in contact with the stationary arm 68 of theelectric contact and set the fan in motion. As the fan revolves theweights 3O swing outwardly and cause the ends 31 to move the shaft 33into the opening 17, almost entirely drawing the v outer end of theshaft into the fan casing.

This will permit the arm 58 to be rocked upon its pivot point so thatthe lever 52 can be engaged by the hook portion of the arm and hold theshut off open. As the fan revolves the wires passing the mouth of thepipe 57 move rapidly, and as the oil flows out of the pipe it is brokenup into a large number of very small particles. The fan causes thisbroken oil to mix with the air and forces the air and oil into the firebox where it is burned. If, for any reason, the power should fail andthe fan stop turning it would be necessary to shut oif the supply of oiland this is accomplished in the fol lowing manner: When the fan beginsto run slowly the centrifugal force of the weights is lessened and thespring 34 forces the shaft 33 outwardly until the outer end of the shaftcomes in contact with the upper end of the arm 58 and moves it away fromthe fan casing. This moves the lower end toward the fan until the lever52 of the stem 50 is'released from the catch and drops to the bracket53. When this happens the stem 50 will be turned and will shut oil thevalve 49 and also move the rod 64 into the housing 45 so that the springarm 67 will be moved away from the arm 68 and this breaks the electriccircuit. If the power returns to normalcstrength the fan cannot startunless the lever 52 is raised to permit the valve 49 to open and theelectric contact to be brought into registryagain. It will 9 thus beseen that it is impossible for the oil to flow through the pipe withoutthe fan running or for the fan to run without the oil being fed.

What I claim is 1. In an oil burner, an electrically operated fluidbreaking and mixing device, a fluidsupply pipe, an electric switch controlling the flow of current to said fluid breaking and mixing devicepositioned adjacent to said fluid pipe, a shut off valve .a valve forsaid fluid 'pipe, an electric switch, common means for operating saidvalve and switch, means. forholding said operating means in a positionto open said valve andclose said switch, and means controlled by saidfan for releasing said operating means to close said valve and open saidswitch.

4:. In an oil burner, an electric fan, wires carried by said fan havingtheir ends spaced from the blades of said fan, a fluid supply pipehaving its outlet positioned between said wires and said fan, :a valveconnected with said pipe, an electric switch controlling said fan, andcommon means for operating said valve and switch.

5. In an oil burner, an electric-fan, a casing for said fan, fluidbreaking means carried by said fan, a fluid supply pipe entering saidcasing and having its 'outlet positioned between said fan and saidbreaking means, a switch controlling said fan, a valve connected withsaid pipe, common means for operating said valve and switch, meanscarried by said casing for holding said operating means in a position toopen said valve and close said switch, and means operated by said fan torelease said operating means to close said valve and open said switch.

6. In an oil burner, an electric fan, a casing for said fan, said fanhaving a hollow hub, a shaft slidably mounted in said hub and extendedthrough said casing, a collar mounted upon said shaft, a spring mountedupon said shaft and contacting with said collar to normally hold saidshaft beyond said casing, levers pivotally connected with said hub andengaging with said collar and adapted to move said shaft within said hubwhen said fan is rotated, fluid breaking means carried by said fan, afluid supply pipe passing into said casing and having its inner endpositioned between said fan and said breaking means, a valve for saidpipe, an electric switch controlling said fan, common means foroperating said valve and switch, an arm pivotally mounted upon saidcasing and having one end contacting with said shaft, the other end ofsaid arm adapted to hold said operating means in a posaid shaftoutwardly to move said arm to a position to release said operating meansfrom said arm to close said valve and open said switch.

7 In an oil burner, an electric fan, said fan being provided with sideplates and with fan blades positioned between said side plates, one ofsaid side plates provided with a plurality of sets of divergentlyarranged catches positioned near its outer edge, wire fluid breakingmeans carried by said catches, each of said breaking means formed from asingle length of wire bent intermediate its length to form a bridgeadapted to be engaged by said catches, the remaining portion of saidwire forming arms extending from said catches to the edge of said plate,and being bent across said fan blades and spaced from said blades, acasing surroundmg said fan, a fluid, supply pipe leading into saidcasing and having its inner end positioned between said wires and saidfan blades, a valve for said supply pipe, a switch'for said fan, andcommon means for operating said valve and switch.

8. In an oil burner, an electric fan, fluid breaking means carried bysaid fan, a casing for said fan, a frame supporting said casing, ahousing carried by said frame, an electric switch in said housing, afluid supply pipe supported upon said frame and leading into saidcasing, a valve carried by said pipe, a rod leading from said valve andsupported intermediate its length upon said frame, means carried by saidrod for operating said switch, and means carried by said casing forholding said rod in a position to open said Valve and close said switch,and means for releasing said rod to close said valve and open saidswitch.

9. In an oil burner, an electric fan, a casing for said fan, a framesupporting said casing, a fluid supply pipe leading into said casing,means carried by said fan for breaking a stream of fluid, a valvecarried by said frame and communicating with said supply pipe, anoperating rod' supported by said frame, and connected with said valve,an electric switch carried by said frame and having a spring arm, aplungermounted in said frame, and contacting with the spring arm of saidswitch, a cam carried by said rod and contact-ing with said plunger tooperate said switch, one portion of said rod extending beyond said frameand formed into an operating lever, means for normally ver to permitsaid lever to return to itsnormal position and close said valve and opensaid switch.

' 10. An atomizer including a fluid breaking and mixing device, a supplypipe for said breaking and mixing device, power means for operating saidbreaking and mixing device, a control for said supply pipe, a controlfor said power means and means operated by said breaking and mixingdevice for simultaneously operating said controls.

11. An atomizer including a fluid breaking and mixing device, powermeans for operating said breaking and mixing device, a supply pipe forsaid breaking and mixing device, a control for said supply pipe, acontrol for said power means, and means operated by said breaking andmixing device for operating said controls.

12. In an oil burner, a fan, means carried by said fan for breaking astream of fluid, a pipe for supplying fluid to said breaking means, acontrol for said pipe, a control for said fan, and means operated bysaid fan for operating said controls.

13. In an oil burner, a casing, a fan in said casing, fluid breakingmeans carried by said fan, a fluid supply pipe entering said casing anddischarging fluid across the path of said breaking means, a control forsaid pipe, a control for said fan, and means operated by said fan. foroperating said controls.

In testimony whereof I aflix my signature in presence of two witnesses.

'SEWARD T. JOHNSON.

Witnesses:

H. C. SCHROEDER, F. P. Somzonnnn.

